rt_rand.c: The usual clean up. Removed useless commentaries and alternate code.
rt_crc.c: The usual clean up. Removed useless commentaries and never to be used code. This file is very strange, I wonder if it's still that usefull or if it cannot be replaced by something much simpler. If it's a CRC checksum of the game files, that should be replaced by something more modern like a MD5 or SHA1 checksum.
cin_main.c: The usual clean up. I removed large chunks of useless commentary and code. I'm having a hard time understanding the code, it look pretty complicated.